Daily Sunspot Evaluation
Observation Sheet Saturday, 14 September 1957
There is no typed record for this day. The values below were read by computer from the table on the sheet; when in doubt, see the drawing. Details →
- Number of groups (g)
- 14
- Number of spots (f)
- 124
- Relative number (R)
- 264
- Observer
- FY
- Reading
- all checks consistent
- File
- 19570914.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 12 | 24 | 4E | ||||
| 2 | B – 3 | 39 | 24E | ||||
| 3 | C – 13 | 23 | 67E | ||||
| 4 | E – 14 | 13 | 43E | ||||
| 5 | ? – 8 | 9 | 83E | ||||
| 6 | C – 3 | -24 | 53E | ||||
| 7 | B – 2 | -26 | 31E | ||||
| 8 | C – 4 | -47 | 17E | ||||
| 9 | H – 1 | -42 | 5W | ||||
| 10 | H – 5 | -21 | 3W | ||||
| 11 | E – 19 | -16 | 36W | ||||
| 12 | H – 5 | -13 | 52W | ||||
| 13 | C – 6 | -7 | 70W | ||||
| 14 | E – 29 | 11 | 46W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.